The numerous successful concrete applications (see, e.g., [1]}, [2]}, [3]}, and the corresponding bibliographies for references until the beginning of 2020) demonstrate that those aims have been fulfilled to a great extent. See, e.g., the recent appraisal in[4]}: “MFC is computationally efficient, easily deployable even on small embedded devices, and can be implemented in real time.” Several conclusive concrete comparisons with PIs and PIDs have been published (see, e.g., [5]}, [6]}, [7]}, [8]}, [9]}, [10]}, [11]}, [12]}, [13]}, [14]}, [15]}, [16]}, [17]}, [18]}).Comparisons with several other control strategies have also been investigated (see, e.g., [19]}, [4]}, [21]}, [22]}, [23]}, [24]}, [25]}, [26]}, [27]}, [28]}). Here we suggest a single universal feedback loop, i.e., the intelligent Proportional-Derivative controller, or iPD,
\(u = - \frac{F_{\text{est}} - \ddot{y}^\ast + K_P e + K_D \dot{e}}{\alpha }\) 
